Expansion joint



' Feb. 9,1926.

A. c. FISCHER 1 EXPANSION JOINT Filed March 24, 1925 1 l l 1 l I I 1 l I I l I I I I l I m 1 I 1 I I IHI 1 I I I I: l: E S 1::

W nut/ r I I [fly]? surface. The sheet with the strips or chips I Patented eb- 9, 1926.

ALBERT C. FISCHER, OF CHICAGO, ILLINOIS EXPANSION JOINT.

. Application filed ljljarch 24, 1925. Serial No. 17,892.

To all whom it may concern: 7 I

Be it known that I, ALBERT C. FISCHER,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Expansion Joints, of which the following is a specification.

Heretofore it has been customary to enclose between continuous felted saturated sheets a bituminous mass varying in thickness, dependin upon the continuous sheet for strengthening the joint and guarding against warping of the soft ductile interior mass. I have found that small pieces of roofing felt, saturated felt, or chips coated with granules from high-grade roofings, make an excellent binding material, and when the mass is placed between the strips which are arranged to lay upon theoutside surface of the joint the mass becomes more rigid and is considerably strengthened. I accomplish this by arranging the strips in position by sorting, forming a thinlayer and allowing them to work upon the outside mass of the joint, top and bottom, which has previously been pressed into sheet form and then again pressed so that the strips or chips would be thoroughly embodied in the surface of the sheet material.

This is accomplished by sorting the chips upon a lower belt and allowing the mastic sheet to flow over the belt with the chips arranged thereon, then have another arrangement in which the chips are put on in much the same manner on the upper above and below is then run between pressing rolls and these formations are pressed into the surface of the mastic sheet.

In the accompanying drawings, Figures 1 and 2 are face views of two forms of chips or webs of fibrous sheet material suitable for use in realizing the present invention.

Figs. 3 and 4 are sectional views of chips or webs, Fig. 3 showing not only the web of fibrous material but a coating of bituminous material and a face of sub-divided or granular material; and Fig. 4 being a section of the fibrous material alone, for in stance, a piece of saturated roofing. felt.

Figs. 5, 6, 7 and 8 are vertical transverse sectional views of roofing joints embodying features of the present invention in different ways.

Figs. 9 and 10 are face views of roofing joints showing different arrangements of the individual strengthening webs applied.

to the surface; and Fig.11 is a face View showing still another arrangement of strengthening webs upon the surface.

In order that my invention may be further elaborated, I will refer to drawings, in which (a) in Figure 1 represents 'a preferable size of this material. In Figure 2 another shape is shown, but I do not wish to be limited to any size or length of strip as long as it is not in the form of a uniform continuous sheet. Figure 3 illustrates the construction of some of these chips or strips in which (6) represents a saturated felt base, (0) an asphalt coating and (d) slate granules.

Another form in which these chips may appear is shown in Figure 4. in which ((1 represents merely a piece of saturated felt. This may be parchment paper or any suitable material which would act as a binding or surfacing means, as long as it is placed in the manner and form outlined. Another valuable feature is that most of this material may be produced from scrap or parts which ordinarily go to Waste or cut from first class waste paper, roofing chips or the like, or any other suitable material having properties of the nature of the described.

Figure 5 illustrates an asphalt mass or section of a sheet (6) in which the chips or strips have been embedded as at (a).

Figure 6 illustrates another construction in which the chips are incorporated in laminated formation with the mastic mass (e) representing the binding laminated strips and (a? the surface strips embedded in the surface.

Figures 7 illustrates another mass formation in which (e) represents the ductile material, (b) the felt base of the chips on the surface, (0) the asphalt layer in which slate particles (03) are embedded.

In Figure 8 (6) represents the ductile or binding material, (a) pieces of saturated -felt, (f) the laminated fibrous material in:

corporated in the ductile material. In Figure 9 is shown the surface of one side. It

material material, -(f) the is understood that either one or both sides may receive this coating. The drawing il lustrates the methodin which these chips or strips are lined on the surface of the sheet material. .(a) represents one of the strips and (e) the binding material or mass forming the mastic sheet.

Figure 10 shows another way in which the strengthening means may be distributed on the surface of the mastic sheet. (a) represents the strips and (e) the mastic sheet.

I do not wish to be limited either in the class of material or the condition of the material. The strips may be unpenetrated fibre, or saturated fibre, or paper strips, roofing strips, husk material or anything which can be formed into elongated narrow strips which will have a tension over a limited area on the surface of the mastic sheet.

Neither do I wish to be limited in the ductile material. It may be of either elastic or ductile material, and by elastic material is meant a material which when pressed out of shape will have a tendency to come back to its original form, and by ductile material is meant a material which when pressed out of shape will not come back to its original form.

Likewise I do not wish to be limited to the structure of the mass, as this may be either solid material or material having fibrous matter incorporated therein, or material in laminated formation.

I claim 1. As a new article of manufacture, mastic sheet material having small narrow strips of strengthening material placed upon one or more of its surfaces.

2. As a new article of manufacture, plastic sheet material having small strips of strengthening material distributed over one or more of its surfaces, said strengthening strips preventing adhesion of the sheet to overlying sheets.

3. As a new article of manufacture, a sheet of plastic material having upon its surface small strengthening webs which are independent of each other.

4. As a new article of manufacture, a plastic sheet having stren thening webs acting independently of eac other upon one or more of the surfaces of the sheet, said strengthening webs being coated with a granular material.

5. As a new article of manufacture, a plastic sheet having embedded on one or more of its surfaces strengthening webs independent of each other, said webs projecting slightly above the surface of the main sheet, making projections over the surface of one or more of the sides of the sheet.

6. A plastic sheet having spread upon one or more of its surfaces strengthening web material subdivided into parts which respectively reinforce limited areas of the plastic sheet.

. 7. An expansion joint consisting of a compressible mastic sheet having strengthening Webs upon its sides, said webs being subdivided into independent pieces respectively reinforcing limited areas and giving greater rigidity to the mastic sheet.

8. An expansion oint consisting of a mass of plastic material having incorporated therewith web-like strengthening material subdivided into independent parts.

9. An expansion joint consisting of a mass of plastic material havingincorporated therewith strengthening webs subdivided into independent parts and in laminated formation.

'10. An expansion joint consisting of a mass of plastic material, having incorporated therewithstrengthening webs in laminated formation; the laminations being parallel with the sides of the joint, one or more of said laminations consisting of a,

multiplicity of relatively small independently acting Web-like parts.

11. An expansion. joint consisting of a mass of plastic material having strengthening webs subdivided into inde endent parts and incorporated therewith t e mass being rolled into sheet form.

12.An expansion joint consisting of a mass of'plastic material having strengthening webs incorporated therewith, and webs exposed upon the surface of the mass;

some of said webs being subdivided into -'a number of separate parts.

13. An expansion joint consisting of a mass of plastic material having strengthening webs incorporated therewith, and webs exposed upon the surface of the mass some of said webs being subdivided into separate parts; the incorporated webs being coated by the plastic material and the exposed webs having their outer faces left uncoated thereby.

14. An expansion joint comprising a mass of plastic material having strengthening webs subdivided into a number of separate partswhich are embeded in its sides.

15. An expansion joint having a considerable, portion of its body composed of hituminous material and having incorporated in said bod web-like strengthening material subdivided into a multiplicity of separately acting parts.

16. An expansion joint comprising a mass of plastic material having strengthening webs embedded in its sides, and partially projecting therefrom, the faces of said webs having granular material adhered thereto.

'17. An expansion joint consisting of a mass of plastic material having strengthen- I spaces between the Webs in the other row.

18. An expansion joint consisting of a plastic mass having incorporated therein a 5 plurality of spaced strengthening webs; said joint havin projections and indentations u on its si e. 19. expansion joint'consisting of a plurality of shale-like layers formed of bituminous material and small spaced pieces 10 of web-like strengthening material. 4

In testimony whereof I have signed my name to this specification on this 20th day of March, A. 1)., 1925. I

ALBERT e. FISCHER, 

